Stepping and Continuing Through a Program

In MP Prism, menu actions such as Step and Next apply to the processes belonging to the current set of processes. The MP Prism term for a set of processes is pset. MP Prism supports several kinds of pre-defined psets as well as user-defined psets. For information about psets, see "Using Psets in MP Prism".

Scalar Prism (like other debuggers) waits for a step, next, or cont command to finish executing before letting you issue most other commands. This behavior is unnecessarily restrictive in MP Prism, however; therefore, if one process or set of processes is executing code, you can still issue commands that affect other processes. For example, you can switch to a different pset and start or stop execution of its processes.